Comparative Analysis of Natural and Mining-Induced Seismo-Acoustic Pulses

Abstract

The ZUA-2 seismo-acoustic apparatus records natural and mining-induced pulses in coal seams. Natural pulses are the result of fissure formation in the solid coal, whereas induced pulses arise principally from extraction of coal and support setting. A seismological laboratory worker distinguishes the natural pulses by ear from the overall sum of the pulses; to do this, a long period of training is required. If we bear in mind that pulse recording must be carried out round the clock, and that the number of districts covered by recording may be high (up to 10 districts per pit), it is easily seen that the mere process of recording requires a large number of these workers.